FBI: Miss. man arrested, accused of poisoning Washington letters

OXFORD, Miss. — A man in Mississippi has been arrested and accused of sending letters with suspected ricin poison to President Barack Obama and other leaders.

FBI Special Agent in Charge Daniel McMullen said the man was arrested Wednesday. His name wasn't immediately released publicly.

Authorities still waited for definitive tests on the letters to Obama and Sen. Roger Wicker, R-Miss., which had raised concern Wednesday at a time when many people were jittery after the Boston bombings.

An FBI intelligence bulletin obtained by The Associated Press said those two letters were postmarked Memphis, Tenn.